Gravel screening device for constructional engineering

Abstract

The utility model discloses a gravel screening device for constructional engineering, and relates to the field of constructional engineering equipment.The gravel screening device for constructional engineering comprises a box body, a screen plate is arranged in the box body, the lower end of the screen plate is connected with a spring, the lower end of the screen plate is connected with an acting block, and the acting block is connected with a sand box. A first motor is connected to the outer end of the box body, a cam is connected to the driving end of the first motor, a collecting hopper is arranged in the box body, a material guide dustpan is arranged in the box body, and first threaded rods are arranged on the two sides of the collecting hopper. By arranging the sieve plate, gravels can be sieved step by step according to the sizes of the gravels, the sieved gravels of different sizes can be accurately collected by arranging the collecting hopper and the material guide dustpan at the lower end of the sieve plate, the device is simple in structure and convenient to operate, and the gravels of different sizes are accurately collected. The compactness and durability of the concrete or mortar can be improved by using the gravel with proper size, so that the construction quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering equipment, and particularly relates to a sand and gravel screening device for construction engineering. Background Art

[0002] Sand and gravel play a crucial role in construction engineering. It is mainly used for the production of building materials such as concrete and mortar. It can be said that the quality of sand and gravel directly affects the strength, durability and safety of building structures. Therefore, the selected sand and gravel should ensure that its quality meets relevant building standards. When using sand and gravel, screening is required to ensure that its size is appropriate.

[0003] However, the existing sand and gravel screening devices for construction engineering generally can only perform single screening. The size of the screened sand and gravel is uneven, and it is impossible to accurately collect the sand and gravel of the required size. The unevenness of the particle size of sand and gravel will affect the performance of building materials such as concrete and mortar, thus affecting the construction quality.

[0004] In order to solve this technical problem, the utility model proposes a sand and gravel screening device for construction engineering. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a sand and gravel screening device for construction engineering, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A sand and gravel screening device for construction engineering includes a box body. A sieve plate is arranged inside the box body. A spring is connected to the lower end of the sieve plate. A acting block is connected to the lower end of the sieve plate. A first motor is connected to the outer end of the box body. The driving end of the first motor is connected to a cam. A collecting hopper is arranged inside the box body. A guiding hopper is arranged inside the box body. First threaded rods are arranged on both sides of the collecting hopper. Second motors are connected to both sides of the box body. A second threaded rod is arranged at the lower end of the guiding hopper. A third motor is arranged inside the box body. A discharging plate is arranged inside the box body.

[0008] Preferably, a feeding hopper is arranged at the upper end of the box body. The lower end of the feeding hopper is communicated with the box body. The feeding hopper is located above the sieve plate. The sieve plate is inclined. Sieve holes are formed inside it. From the high end to the low end of the sieve plate, the radius of the sieve holes gradually becomes larger.

[0009] Preferably, the lower end of the spring is connected to a fixed block, and the fixed block is connected to the inner wall of the box body. The driving end of the first motor is rotatably connected inside the box body. The cam is located below the acting block, and the protruding end of the cam can be connected to the acting block.

[0010] Preferably, the collecting hopper is located at the lower end of the sieve plate, the feeding hopper is located at the lower end of the collecting hopper, the first threaded rod is inclined and has the same inclination angle as the sieve plate, and the driving end of the second motor is connected to the first threaded rod.

[0011] Preferably, first connection blocks are connected to both sides of the collecting hopper. Threaded grooves are formed in the first connection blocks. The first threaded rod is threadedly connected to the threaded grooves in the first connection blocks, and the first connection blocks are slidably connected to the inside of the box body.

[0012] Preferably, an inclined plate is connected inside the feeding hopper. The inclined plate is inclined, and the lowermost end of the inclined plate is located at the outer end of the box body. The feeding hopper is slidably connected to the inside of the box body, and a second connection block is connected to the lower end of the feeding hopper.

[0013] Preferably, a threaded groove is formed in the second connection block. The second threaded rod is threadedly connected to the threaded groove in the second connection block. The driving end of the third motor is connected to the second threaded rod. The discharge plate is inclined, and its side end is located at the outer end of the box body. The discharge plate is located at the lower end of the feeding hopper.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] In the present utility model, by providing a sieve plate, sand and gravel can be gradually screened according to their sizes. By providing a collecting hopper and a feeding hopper at the lower end of the sieve plate, sand and gravel of different sizes after screening can be accurately collected. Specifically, determine the size of the sand and gravel to be collected, then determine the position of the sieve holes in the sieve plate corresponding to the size of the sand and gravel, move the collecting hopper to the lower end of the sieve hole, and move the feeding hopper to the lower end of the collecting hopper. Therefore, when the sand and gravel of this size roll to the position of the sieve hole, it will be able to fall into the collecting hopper, then fall into the feeding hopper, and finally slide out from the side end, so as to achieve accurate collection. The device has a simple structure and is easy to operate. By accurately collecting sand and gravel of different sizes and using sand and gravel of appropriate sizes, the density and durability of concrete or mortar can be improved, thereby improving the construction quality.

[0016] In the present utility model, by providing an acting block and a cam, starting the first motor will drive the cam to rotate. When the cam rotates, its protruding end will be able to act on the acting block, thereby colliding with the acting block, and the sieve plate can be continuously vibrated with the assistance of a spring. In this way, the sand and gravel can jump on the sieve plate, which can facilitate the screening of the sand and gravel and make the sand and gravel roll on the sieve plate, thus facilitating gradual screening. The device has high screening efficiency and good screening effect, and its practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of a sand and gravel screening device for construction engineering of the present utility model;

[0018] Figure 2 Schematic diagram of the rear end structure of a sand and gravel screening device for building engineering of the present utility model;

[0019] Figure 3 Schematic diagram of the sieve plate structure of a sand and gravel screening device for building engineering of the present utility model;

[0020] Figure 4 Schematic diagram of the internal structure of a sand and gravel screening device for building engineering of the present utility model;

[0021] Figure 5 Schematic diagram of the sectional structure of the material guiding hopper of a sand and gravel screening device for building engineering of the present utility model.

[0022] In the figure: 1, box body; 2, sieve plate; 3, spring; 4, acting block; 5, first motor; 6, cam; 7, collecting hopper; 8, material guiding hopper; 9, first threaded rod; 10, second motor; 11, second threaded rod; 12, third motor; 13, discharge plate; 14, feeding hopper; 15, first connecting block; 16, second connecting block. Specific implementation manner

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0024] As Figures 1-5 shown, a sand and gravel screening device for building engineering includes a box body 1. A feeding hopper 14 is arranged at the upper end of the box body 1. The lower end of the feeding hopper 14 is communicated with the box body 1. The feeding hopper 14 is used to add the sand and gravel to be screened into the device. A sieve plate 2 is arranged in the box body 1. The sieve plate 2 is inclined. The inclined arrangement can facilitate the rolling of the sand and gravel on the sieve plate 2. Sieve holes are opened inside it. From the high end to the low end of the sieve plate 2, the radius of the sieve holes gradually becomes larger, so as to screen the sand and gravel step by step. The feeding hopper 14 is located at the upper end of the sieve plate 2.

[0025] A spring 3 is connected to the lower end of the sieve plate 2. The lower end of the spring 3 is connected to a fixed block, and the fixed block is connected to the inner wall of the box body 1, so as to fix the sieve plate 2. A acting block 4 is connected to the lower end of the sieve plate 2. A first motor 5 is connected to the outer end of the box body 1. The driving end of the first motor 5 is connected to a cam 6. The driving end of the first motor 5 is rotatably connected inside the box body 1. The cam 6 is located below the acting block 4. The protruding end of the cam 6 can be connected to the acting block 4. Thus, driving the first motor 5 will drive the cam 6 to rotate. When the cam 6 rotates, its protruding end acts on the acting block 4, so that the sieve plate 2 can vibrate continuously under the action of the spring 3, so that the sand and gravel on the sieve plate 2 can jump, thus facilitating screening. The sand and gravel that cannot fall through the sieve holes will roll along the sieve plate 2.

[0026] Inside the box body 1, there is a collecting hopper 7. Inside the box body 1, there is a guiding chute 8. The collecting hopper 7 is located at the lower end of the sieve plate 2, and the guiding chute 8 is located at the lower end of the collecting hopper 7. In this way, the sand and gravel collected by the collecting hopper 7 can fall into the guiding chute 8. On both sides of the collecting hopper 7, there are first threaded rods 9. The first threaded rods 9 are inclined, and their inclination angles are the same as that of the sieve plate 2. In this way, the moving direction of the collecting hopper 7 is the same as that of the sieve plate 2. On both sides of the box body 1, there is a second motor 10. The driving end of the second motor 10 is connected to the first threaded rod 9. On both sides of the collecting hopper 7, there is a first connecting block 15. A threaded groove is opened in the first connecting block 15. The first threaded rod 9 is threadedly connected in the threaded groove of the first connecting block 15. The first connecting block 15 is slidably connected inside the box body 1. In this way, starting the second motor 10 will drive the first threaded rod 9 to rotate. The rotation of the first threaded rod 9 acts on the first connecting block 15, and it will be able to drive the collecting hopper 7 to move inside the box body 1, so as to accurately collect the selected sand and gravel.

[0027] Inside the guiding chute 8, there is an inclined plate. The inclined plate is inclined, and the lowermost end of the inclined plate is located at the outer end of the box body 1. In this way, the sand and gravel falling into the guiding chute 8 will slide along the inclined plate, so as to be discharged from the device. In this way, it is convenient to collect the selected sand and gravel. The guiding chute 8 is slidably connected inside the box body 1. At the lower end of the guiding chute 8, there is a second threaded rod 11. Inside the box body 1, there is a third motor 12. At the lower end of the guiding chute 8, there is a second connecting block 16. A threaded groove is opened in the second connecting block 16. The second threaded rod 11 is threadedly connected in the threaded groove of the second connecting block 16. The driving end of the third motor 12 is connected to the second threaded rod 11. In this way, starting the third motor 12 will drive the second threaded rod 11 to rotate. The rotation of the second threaded rod 11 acts on the second connecting block 16, and it will be able to drive the guiding chute 8 to move so that it moves to the lower end of the collecting hopper 7.

[0028] Inside the box body 1, there is a discharge plate 13. The discharge plate 13 is inclined, and its side end is located at the outer end of the box body 1. The discharge plate 13 is located at the lower end of the guiding chute 8. The sand and gravel that do not fall into the collecting hopper 7 will directly fall onto the discharge plate 13 and then slide out of the device along the discharge plate 13.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand and gravel screening device for construction engineering, comprising a box body (1), characterized in that: A sieve plate (2) is arranged inside the box body (1). A spring (3) is connected to the lower end of the sieve plate (2), and an acting block (4) is connected to the lower end of the sieve plate (2). A first motor (5) is connected to the outer end of the box body (1), and a cam (6) is connected to the driving end of the first motor (5). A collecting hopper (7) is arranged inside the box body (1), and a guiding hopper (8) is arranged inside the box body (1). First threaded rods (9) are arranged on both sides of the collecting hopper (7), and second motors (10) are connected to both sides of the box body (1). A second threaded rod (11) is arranged at the lower end of the guiding hopper (8), a third motor (12) is arranged inside the box body (1), and a discharging plate (13) is arranged inside the box body (1).

2. The sand and gravel screening device for construction engineering according to claim 1, characterized in that: A feeding hopper (14) is arranged at the upper end of the box body (1). The lower end of the feeding hopper (14) is communicated with the box body (1). The feeding hopper (14) is located above the sieve plate (2). The sieve plate (2) is inclined, and sieve holes are formed inside it. From the high end to the low end of the sieve plate (2), the radius of the sieve holes gradually becomes larger.

3. A sand and gravel screening device for construction engineering according to claim 1, characterized in that: The lower end of the spring (3) is connected to a fixed block, and the fixed block is connected to the inner wall of the box body (1). The driving end of the first motor (5) is rotatably connected inside the box body (1). The cam (6) is located below the acting block (4), and the protruding end of the cam (6) can be connected to the acting block (4).

4. A sand and gravel screening device for construction engineering according to claim 1, characterized in that: The collecting hopper (7) is located below the sieve plate (2), and the guiding hopper (8) is located below the collecting hopper (7). The first threaded rods (9) are inclined, and their inclination angles are the same as that of the sieve plate (2). The driving end of the second motor (10) is connected to the first threaded rods (9).

5. A sand and gravel screening device for construction engineering according to claim 1, characterized in that: First connecting blocks (15) are connected to both sides of the collecting hopper (7). Threaded grooves are formed inside the first connecting blocks (15), and the first threaded rods (9) are threadedly connected to the threaded grooves inside the first connecting blocks (15). The first connecting blocks (15) are slidably connected inside the box body (1).

6. The sand and gravel screening device for construction engineering according to claim 1, characterized in that: An inclined plate is connected inside the guiding hopper (8). The inclined plate is inclined, and the lowermost end of the inclined plate is located at the outer end of the box body (1). The guiding hopper (8) is slidably connected inside the box body (1), and a second connecting block (16) is connected to the lower end of the guiding hopper (8).

7. The sand and gravel screening device for construction engineering according to claim 6, characterized in that: Threaded grooves are formed inside the second connecting blocks (16), and the second threaded rods (11) are threadedly connected to the threaded grooves inside the second connecting blocks (16). The driving end of the third motor (12) is connected to the second threaded rods (11). The discharging plate (13) is inclined, and its side end is located at the outer end of the box body (1). The discharging plate (13) is located below the guiding hopper (8).

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